I looked through the titles and did not see anything on this. If someone could explain, preferably with a picture or illustration, how to get the bucking out of the hop up and off of the barrel I would appreciate it.

If you have any favorite hop up tweaks for making the ATP more accurate please tell us about them here.

First, start by separating you slide from your frame, by racking the gun, and pulling down on the take down tabs, and sliding the slide forward off of the frame, making sure that your hammer is in the fire position so that the slide does not get hung up on it. this is what it will look like

(Ain't she gorgeous?)

Next, remove the Spring guide from your slide, by pulling the rear of the guide off of the barrel, and it should simply slide out. then, remove the outer and inner barrel by pushing it forward through the slide, and lifting it away from the slide as you pull it back through. when there seperated, you should have this

After that, you need to slide the inner barrel out of the outer barrel, and it will look like this.

Setting the outer barrel aside and focusing on the inner barrel, locate the pin shown below, and punch it out with a precision punch, or a finishing nail with the point filed off. be sure to take care when separating the two peices, because there is a spring in the lower portion of the assembly that could be lost.

after you remove the pin, the two pieces should push apart because there is a spring keeping the correct spacing on the two parts, BE CAREFUL DO NOT LOSE THIS SPRING. you should have something resembling what is shown below.

your almost there!

Now, take the inner barrel, and carefully slide off the hop up dial, pressing your thumb on the top as shown below, because you don't not want to loose the tiny little ball that act's as the "hopup nub" so to speak. trust me. its really easy to drop, it rolls, and its so small you have very little chance of finding it again.

Finally, slide off the hop up bucking and you have officially broken down your ATP to the inner barrel and hop up bucking!

Sweet victory.

P.S.
this is my first guide with photo's and was done with a cell phone. sorry for the poor quality, but i made sure that you can at least tell what im getting at. i hope this helps someone, and if theres anything else you guys want with the atp or even the mp7 let me know,